Indicate whether the following statement are true or false. Rectify each false statement to make it true.
(i) One of the alternate sources of protein for animal and human nutrition is single cell protein.
(ii) It has been calculated that a 250 g cow produces 200 g of protein per day.
(iii) Techniques of tissue culture and somatic hybridization offer cast potential for manipulation of plants in-vivo to produce new varieties.

Explanation

To determine the truthfulness of the statements and rectify the false ones, we will analyze each statement step by step.

### Step-by-Step Solution:

1. **Statement (i)**: "One of the alternate sources of protein for animal and human nutrition is single cell protein."
- **Analysis**: Single cell protein (SCP) is derived from microbial cells, such as algae, fungi, bacteria, and yeast. It is indeed a rich source of protein and can be used in both human and animal nutrition.
- **Conclusion**: This statement is **True**.

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